Well, SE has a few games on the DS so it could be that for mentioning some of the bestiary that makes an appearance in those games (morbol and ahriman) you have to show the trademark stuff.

You could be right though...maybe they're making some sort of auction house program that lets you buy and sell items on your DS. CCP are planning on something like that for EVE but it will be for your phone.

It would be possible. The DSi has a touch screen to sub for a mouse, buttons for monving and such, and has an SD card slot that could store the game for playing. Plausible, though? Maybe not the whole game; maybe an auction house program, or a training thingamajig. I don't know.

If this is anything at all, I highly doubt it would offer any connectivity to the full FFXIV whatsoever. DS connects to the Wii, not the PS3. Something PSP-based would make more sense in that regard. I'm leaning toward spinoff/standalone game, if anything.